AttributeError when spinning up Coiled clusters with distributed==2021.12.0

**What happened**:
Coiled cluster fails to spin up with `AttributeError: can't set Attribute`, full traceback below.

```
In [2]: coiled.Cluster()
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
in
----> 1 coiled.Cluster()

~/mambaforge/envs/snowflake/lib/python3.9/site-packages/coiled/cluster.py in __init__(self, name, n_workers, configuration, software, worker_cpu, worker_gpu, worker_gpu_type, worker_memory, worker_class, worker_options, worker_vm_types, scheduler_cpu, scheduler_memory, scheduler_class, scheduler_options, scheduler_vm_types, asynchronous, cloud, account, shutdown_on_close, use_scheduler_public_ip, backend_options, credentials, timeout, environ, protocol)
337 # `.scheduler_comm` will not have been assigned to the object's instance
338 # yet
--> 339 super().__init__(asynchronous)
340
341 self.cloud: Cloud[IsAsynchronous] = cloud or Cloud.current(

~/mambaforge/envs/snowflake/lib/python3.9/site-packages/distributed/deploy/cluster.py in __init__(self, asynchronous, loop, quiet, name, scheduler_sync_interval)
63 ):
64 self._loop_runner = LoopRunner(loop=loop, asynchronous=asynchronous)
---> 65 self.loop = self._loop_runner.loop
66
67 self.scheduler_info = {"workers": {}}

AttributeError: can't set attribute
```

**What you expected to happen**:
Coiled cluster to spin up.

**Minimal Complete Verifiable Example**:

```python
import coiled

coiled.Cluster()
```

**Anything else we need to know?**:
Error is resolved by downgrading dask and distributed to 2021.11.2

**Environment**:

- Dask version: 2021.12.0
- Python version: 3.9.7
- Operating System: macOS
- Install method (conda, pip, source): conda